Security-Holder Rights · Bylaw Amendment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549       FORM 8-K   CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934   March 6, 2026   Date of Report (Date of earliest event reported)   (Exact name of registrant as specified in its charter)   TN 001-15185 62-0803242 (State or other jurisdiction of incorporation) (Commission File Number) (I.R.S. Employer Identification No.)     165 Madison Avenue Memphis , Tennessee 38103 (Address of Principal Executive Offices) (Zip Code)   ( 901 ) 523-4444 Registrant’s telephone number, including area code   (Former name or former address, if changed from last report)       Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:   ☐ Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)     ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)     ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))     ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))   Securities registered pursuant to Section 12(b) of the Act:   Title of Each Class Trading Symbol(s) Name of Exchange on which Registered $0.625 Par Value Common Capital Stock FHN New York Stock Exchange LLC Depositary Shares, each representing a 1/400th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series C FHN PR C New York Stock Exchange LLC Depositary Shares, each representing a 1/4,000th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series E FHN PR E New York Stock Exchange LLC Depositary Shares, each representing a 1/4,000th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series F FHN PR F New York Stock Exchange LLC   Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).   Emerging growth company ☐   If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐     Item 3.03. Material Modification to Rights of Security Holders.   The ability of First Horizon Corporation (the “Company”) to declare or pay dividends on, or purchase, redeem or otherwise acquire, shares of its common stock is subject to certain restrictions in the event that the Company does not declare and pay (or set aside) dividends on its Non-Cumulative Perpetual Preferred Stock, Series H, liquidation preference $100,000 per share (the “Series H Preferred Stock”). The terms of the Series H Preferred Stock, including such restrictions, are more fully described in the Articles of Amendment (as defined in Item 5.03 below), a copy of which is filed as Exhibit 3.1 and is incorporated herein by reference.   Item 5.03. Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.   On March 6, 2026, the Company filed the Articles of Amendment (the “Articles of Amendment”) to its Amended and Restated Charter, with the Secretary of State of the State of Tennessee, establishing the preferences, limitations and relative rights of the Series H Preferred Stock. The Articles of Amendment became effective upon filing, and a copy is filed as Exhibit 3.1 and is incorporated herein by reference.   Item 8.01. Other Events.   On March 12, 2026, the Company completed the sale of 16,000,000 depositary shares (the “Depositary Shares”), each representing a 1/4,000th interest in a share of Series H Preferred Stock, pursuant to an Underwriting Agreement (the “Underwriting Agreement”), dated March 5, 2026, between the Company, on the one hand, and Morgan Stanley & Co. LLC, Citigroup Global Markets Inc., J.P. Morgan Securities LLC, RBC Capital Markets, LLC and UBS Securities LLC, as representatives of the underwriters, on the other hand. The offering and sale of the Depositary Shares was made pursuant to the Company’s Registration Statement on Form S-3 (File No. 333-287053) filed with the Securities and Exchange Commission.   A copy of the Underwriting Agreement is filed as Exhibit 1.1 and is incorporated by reference herein.   The Deposit Agreement, dated as of March 12, 2026, by and among the Company, Equiniti Trust Company, LLC, as depositary, and the holders from time to time of the depositary receipts described therein, is filed as Exhibit 4.1 and is incorporated by reference herein. The form of certificate representing the Series H Preferred Stock is filed as Exhibit 4.2 and is incorporated herein by reference. The form of depositary receipt representing the Depositary Shares is filed as Exhibit 4.3 and is incorporated by reference herein.   A copy of the opinion and consent of T. Lang Wiseman, Senior Executive Vice President and General Counsel of the Company, as to the validity of the Series H Preferred Stock is filed as Exhibit 5.1, and a copy of the opinion and consent of Sullivan & Cromwell LLP as to the validity of the depositary receipts representing the Depositary Shares is filed as Exhibit 5.2.   Item 9.01 Financial Statements and Exhibits   (d) Exhibits   Exhibit # Description 1.1 Underwriting Agreement, dated March 5, 2026, between the Company, on the one hand, and Morgan Stanley & Co. LLC, Citigroup Global Markets Inc., J.P. Morgan Securities LLC, RBC Capital Markets, LLC and UBS Securities LLC, as representatives of the underwriters, on the other hand, relating to the purchase of the Depositary Shares. 3.1 Articles of Amendment to the Amended and Restated Charter, of the Company, related to the Series H Preferred Stock. 4.1 Deposit Agreement, dated as of March 12, 2026, by and among the Company, Equiniti Trust Company, LLC, as depositary, and the holders from time to time of the depositary receipts described therein. 4.2 Form of certificate representing the Series H Preferred Stock. 4.3 Form of depositary receipt representing the Depositary Shares (included in Exhibit 4.1). 5.1 Opinion of T. Lang Wiseman. 5.2 Opinion of Sullivan & Cromwell LLP. 23.1 Consent of T. Lang Wiseman (included in Exhibit 5.1). 23.2 Consent of Sullivan & Cromwell LLP (included in Exhibit 5.2). 104 Cover Page Interactive Data File, formatted in Inline XBRL   SIGNATURES   Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.     First Horizon Corporation   (Registrant)       By:  /s/ Hope Dmuchowski   Name:  Hope Dmuchowski   Title: Senior Executive Vice President and Chief Financial Officer   Date: March 12, 2026